Note that Aero is not available for Windows 7 Starter. Furthermore, you must use an Aero Theme, rather than a Basic or High Contrast Theme. To verify or change your theme go to > Start and type > theme into the search field. Then click > Change the theme and select a theme from the list of available > Aero Themes. You have to rate your computer first (Windows Experience Index). Your computer must have DirectX 9.0 or a later version installed. Or, your computer must have WDDM 1.0 or a later version installed. Aero is not available in Windows 7 Home Basic. pP9Z.